Question

What is the scientific reason for the anomalous expansion of water?​

Answer 1

Answer:

This anomalous expansion of water is an abnormal property of water whereby it expands instead of contracting when the temperature goes from 4°C to 0°C, and it becomes less dense. The density becomes less as it freezes because molecules of water normally form open crystal structures when in solid form.

Answer 2

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ᴡʜᴀᴛ ɪs ᴛʜᴇ sᴄɪᴇɴᴛɪғɪᴄ ʀᴇᴀsᴏɴ ғᴏʀ ᴛʜᴇ ᴀɴᴏᴍᴀʟᴏᴜs ᴇxᴘᴀɴsɪᴏɴ ᴏғ ᴡᴀᴛᴇʀ?

$\large{\sf{\pink{\underline{\underline{ᴀɴsᴡᴇʀ}}}}}$

ᴡᴀᴛᴇʀ ᴅᴏᴇs ɴᴏᴛ ᴏʙᴇʏ ᴛʜᴇ ʟᴀᴡ ᴏғ ᴇxᴘᴀɴsɪᴏɴ ᴀɴᴅ ᴄᴏɴᴛʀᴀᴄᴛɪᴏɴ ʙᴇᴛᴡᴇᴇɴ 0 ᴛᴏ 4°ᴄ ᴀɴᴅ sʜᴏᴡs ᴀɴᴏᴍᴀʟᴏᴜs ᴏʀ ᴜɴᴜsᴜᴀʟ ʙᴇʜᴀᴠɪᴏʀ. ᴛʜᴇ ʀᴇᴀsᴏɴ ғᴏʀ ᴛʜɪs ɪs ᴛʜᴀᴛ ᴡᴀᴛᴇʀ ɪs ᴘᴏʟᴀʀ sᴜʙsᴛᴀɴᴄᴇ ᴀɴᴅ ᴅᴜᴇ ᴛᴏ ɢʀᴇᴀᴛᴇʀ ᴘᴏʟᴀʀɪᴛʏ, ᴀʟʟ ᴛʜᴇ ᴡᴀᴛᴇʀ ᴍᴏʟᴇᴄᴜʟᴇs ᴀʀᴇ ᴀssᴏᴄɪᴀᴛᴇᴅ ʙʏ ʜʏᴅʀᴏɢᴇɴ ʙᴏɴᴅɪɴɢ.

$\large{\bf{\blue{\underline{\underline{Thanks}}}}}$